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Ira Lisetskai [31]
3 years ago
9

After being rearranged and simplified, which equation cannot be solved using

Mathematics
1 answer:
Anna [14]3 years ago
7 0

Answer:

D

Step-by-step explanation:

D cannot be solved using the quadratic formula since it lack a

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A point is chosen at random in the square shown below. find the probability that the point is in the shaded circular region. eac
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|\Omega|=6^2=36\\ |A|=3.14\cdot 3^2=28.26\\\\ P(A)=\dfrac{28.26}{36}\approx0.79

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Select the sets that are not functions.
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D and E are the ones that aren’t functions because they use the x-values more then once
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Prove the statement holds for all positive integers:<br><br> 2 + 4 + 6 + ... + 2n = n² + n
crimeas [40]

Proving a relation for all natural numbers involves proving it for n = 1 and showing that it holds for n + 1 if it is assumed that it is true for any n.

The relation 2+4+6+...+2n = n^2+n has to be proved.

If n = 1, the right hand side is equal to 2*1 = 2 and the left hand side is equal to 1^1 + 1 = 1 + 1 = 2

Assume that the relation holds for any value of n.

2 + 4 + 6 + ... + 2n + 2(n+1) = n^2 + n + 2(n + 1)

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= n^2 + 2n + 1 + n + 1

= (n + 1)^2 + (n + 1)

This shows that the given relation is true for n = 1 and if it is assumed to be true for n it is also true for n + 1.

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6 0
3 years ago
Which equation does the graph of the system of equations solve?
jasenka [17]

Answer:

B

Step-by-step explanation:

Equation of line 1:

Choose two points : (-1, 0) & (0,2)

y -intercept = b = 2

y = mx+ 2

Plugin the values of the points ( -1 , 0) in the above equation

0 = -1m + 2

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Equation of line 1 : y = 2x + 2

Equation of line 2:

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y-intercept = b = 5

y = mx +b

y = mx + 5

Plugin the value of points (5 , 0) in the above equation

0 = 5m + 5

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-5/5 = m

m = -1

Equation of line 2: y = -x + 5

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2 years ago
What is 3/4×89+5/89÷23
SIZIF [17.4K]
I hope this helps you

7 0
3 years ago
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